Song,
You might want to pay attention to this thread and see what happens before you hit the BIN button:
https://www.pentaxforums.com/forums/field-accessories/66274-goint-take-plunge-ebay-q3.html
On the Kirk ballheads, Kirk does have a presence on Fleabay where they sell off new ballheads with small cosmetic flaws at a little bit of a discount over perfect ones. The price + shipping isn't a whole lot less than a perfect new one, but if you throw in the 8% Bing eBay discount, you'll be saving $20, making your grand total with shipping $240, as opposed to $265 + shipping. Here's a current listing for one, if you're interested:
KIRK ENTERPRISE BH-3 BALL HEAD - eBay (item 380139331667 end time Aug-13-09 06:25:00 PDT)
Also, it would be worth it to keep an eye out for used heads, regardless of which brand you're interested in. In my case, the seller had simply moved up to the BH-1 head and didn't have any further use for the BH-3, so I got a great deal. Again, if the seller offers the BIN option, you should be able to get the 8% Bing cashback deal.
Heather